Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 1,979	$ 6,007
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,722	3,277
Provision for receivable allowances	1,672	3,102
Net change in inventory provision	765	(1)
Foreign currency adjustments on intercompany amounts	(110)	(497)
Stock-based compensation	671	1,095
Loss (gain) on investments and disposal of fixed assets	(140)	24
Changes in operating assets and liabilities:
Accounts receivable	(4,466)	(893)
Inventories	(2,198)	(1,897)
Prepaid expenses and other current assets	(273)	(376)
Other assets	(13)	313
Accounts payable	(80)	1,475
Accrued expenses and other liabilities	(433)	369
Pension liabilities	(336)	(218)
Net cash provided by (used in) operating activities	(240)	11,780
Cash flows from investing activities:
Change in restricted cash	(4)	(48)
Purchase of business, net of deferred payments	(20,000)	0
Purchases of investments	0	(3,919)
Purchases of property and equipment	(1,566)	(1,118)
Proceeds from sale of investments	324	387
Net cash used in investing activities	(21,246)	(4,698)
Cash flows from financing activities:
Principal payments on capital lease obligations	(616)	(745)
Repayments of loans and notes payable	(243)	(939)
Proceeds from employee equity plans	1,349	567
Payment of cash dividends to stockholders	(931)	0
Net cash used in financing activities	(441)	(1,117)
Effect of exchange rate fluctuations on cash and cash equivalents	640	(1,738)
Net increase (decrease) in cash and cash equivalents	(21,287)	4,227
Cash and cash equivalents at beginning of period	107,116	98,604
Cash and cash equivalents at end of period	85,829	102,831
Supplemental disclosure of noncash investing activities:
Deferred payments of business acquisition	$ 30,000	$ 0